Has there been any change in your weight? Could you have some insulin resistance?
It's still quite early days and yoyr body may still be getting back to normal. Have you had a chance to ask your DSN about it? I can understand why you're concerned, but I wouldn't worry. Just perhaps give your DSN a call and get some reassurance when you have time.
If you're not too concerned, then maybe leave it a little until things settle a bit and you get your BS levels more stable. Don't put pressure on yourself. Life with a baby is unpredictable and that makes it harder to control your BS.